330 static int epool_init(struct entry_pool *ep, unsigned nr_entries)  in epool_init()  argument
334 	ep->entries = vzalloc(sizeof(struct entry) * nr_entries);  in epool_init()
335 	if (!ep->entries)  in epool_init()
338 	ep->entries_end = ep->entries + nr_entries;  in epool_init()
340 	INIT_LIST_HEAD(&ep->free);  in epool_init()
342 		list_add(&ep->entries[i].list, &ep->free);  in epool_init()
344 	ep->nr_allocated = 0;  in epool_init()
349 static void epool_exit(struct entry_pool *ep)  in epool_exit()  argument
351 	vfree(ep->entries);  in epool_exit()
354 static struct entry *alloc_entry(struct entry_pool *ep)  in alloc_entry()  argument
358 	if (list_empty(&ep->free))  in alloc_entry()
361 	e = list_entry(list_pop(&ep->free), struct entry, list);  in alloc_entry()
364 	ep->nr_allocated++;  in alloc_entry()
372 static struct entry *alloc_particular_entry(struct entry_pool *ep, dm_cblock_t cblock)  in alloc_particular_entry()  argument
374 	struct entry *e = ep->entries + from_cblock(cblock);  in alloc_particular_entry()
378 	ep->nr_allocated++;  in alloc_particular_entry()
383 static void free_entry(struct entry_pool *ep, struct entry *e)  in free_entry()  argument
385 	BUG_ON(!ep->nr_allocated);  in free_entry()
386 	ep->nr_allocated--;  in free_entry()
388 	list_add(&e->list, &ep->free);  in free_entry()
394 static struct entry *epool_find(struct entry_pool *ep, dm_cblock_t cblock)  in epool_find()  argument
396 	struct entry *e = ep->entries + from_cblock(cblock);  in epool_find()
400 static bool epool_empty(struct entry_pool *ep)  in epool_empty()  argument
402 	return list_empty(&ep->free);  in epool_empty()
405 static bool in_pool(struct entry_pool *ep, struct entry *e)  in in_pool()  argument
407 	return e >= ep->entries && e < ep->entries_end;  in in_pool()
410 static dm_cblock_t infer_cblock(struct entry_pool *ep, struct entry *e)  in infer_cblock()  argument
412 	return to_cblock(e - ep->entries);  in infer_cblock()